diff --git a/README.md b/README.md
index b4a7eea..b2cfa08 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ It's plain static files with nothing to build, and it loads nothing from other s
 
 - Keep `/support.html` and `/privacy.html` at these addresses: the App Store, Google Play, Chrome and Firefox listings point to them.
 - To release a platform, edit its card in `index.html`: set the store link, then remove the `soon` class and the badge. The main button picks it up.
-- For a new Windows version, put the installer in `downloads/` and change the version in the Windows card's link.
+- For a new Windows version, run `scripts/publish-update.sh` in `kestrove-desktop`, then change the version in the Windows card's link. The script puts the installer in `downloads/` and writes `updates/latest.json`, which the Windows app checks.
 - `host/` holds the server setup files that `host.html` tells people to download. Refresh them from `kestrove-server/selfhost` when those change.
 
 Installers are not kept in git. Copy them to `downloads/` on the server.
diff --git a/index.html b/index.html
index 507346c..2778a2d 100644
--- a/index.html
+++ b/index.html
@@ -98,8 +98,8 @@
         <a class="btn" href="https://apps.apple.com/app/kestrove/idREPLACE_ME" data-label="Download for Mac">Get it on the Mac App Store</a></article>
       <article class="card soon" data-os="android"><h3>Android</h3><p>Google Play</p><span class="badge">Coming soon</span>
         <a class="btn" href="https://play.google.com/store/apps/details?id=com.samialabri.kestrove" data-label="Get it on Google Play">Get it on Google Play</a></article>
-      <article class="card" data-os="windows"><h3>Windows</h3><p>Windows 10 and 11, 64-bit.</p>
-        <a class="btn" href="/downloads/Kestrove_1.2.0_x64-setup.exe" data-label="Download for Windows">Download installer</a></article>
+      <article class="card" data-os="windows"><h3>Windows</h3><p>Windows 10 and 11, 64-bit. Updates itself.</p>
+        <a class="btn" href="/downloads/Kestrove_1.2.1_x64-setup.exe" data-label="Download for Windows">Download installer</a></article>
       <article class="card soon" id="linux" data-os="linux"><h3>Linux</h3><p>Snap Store</p><span class="badge">Coming soon</span>
         <pre class="cmd"><code>sudo snap install kestrove</code></pre>
         <p class="fine">Open a terminal, run this command, then start Kestrove from your applications.</p></article>